tree f5ce2c5456a1a2e6dcbbd6d1d688a72aa65b33de
parent 8f92864ca387ab69cbcfbf1da3ed02490e95a25d
author Alexander Thomas <athom@google.com> 1619519850 +0000
committer Alexander Thomas <athom@google.com> 1619519850 +0000

[build] Raise minimum mac SDK version to 10.13 to reduce build warnings

This removes warnings like these:
```
 ld: warning: object file (../../buildtools/mac-x64/clang/bin/../lib/libc++.a(memory.cpp.o)) was built for newer OSX version (10.13) than being linked (10.8)
```

These warnings seem to be harmless but may indicate that our builds are
no longer working below macOS 10.13. On developer machines, these
warnings don't seem to occur. We don't test on versions older than 10.13
so we can't guarantee that the Dart SDK works on those.

https://github.com/dart-lang/sdk/issues/40850

Change-Id: I1b146803605daa9e42d4283722efb39ecd66f0ab
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/146803
Reviewed-by: Ryan Macnak <rmacnak@google.com>